Initial development of an electronic testis rigidity tester

Mirilas, P; Tsakiridis, O

dc.contributor.author	Mirilas, P	en
dc.contributor.author	Tsakiridis, O	en
dc.date.accessioned	2014-03-01T02:02:19Z
dc.date.available	2014-03-01T02:02:19Z
dc.date.issued	2011	en
dc.identifier.issn	1537744X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29306
dc.subject	Cryptorchidism	en
dc.subject	Elasticity	en
dc.subject	Medical device design processes	en
dc.subject	Rigidity	en
dc.subject	Tactile sensors	en
dc.subject	Testis	en
dc.subject	Torsion	en
dc.subject.other	analog digital converter	en
dc.subject.other	article	en
dc.subject.other	computer analysis	en
dc.subject.other	computer program	en
dc.subject.other	electric potential	en
dc.subject.other	electronic sensor	en
dc.subject.other	electronic testis rigidity tester	en
dc.subject.other	equipment design	en
dc.subject.other	experimental test	en
dc.subject.other	force	en
dc.subject.other	imaging system	en
dc.subject.other	measurement	en
dc.subject.other	medical decision making	en
dc.subject.other	medical instrumentation	en
dc.subject.other	microsensor	en
dc.subject.other	orchiectomy	en
dc.subject.other	phantom	en
dc.subject.other	power supply	en
dc.subject.other	rating scale	en
dc.subject.other	rigidity	en
dc.subject.other	sensor	en
dc.subject.other	surgeon	en
dc.subject.other	surgical anatomy	en
dc.subject.other	tactile stimulation	en
dc.subject.other	transducer	en
dc.subject.other	cryptorchism	en
dc.subject.other	electronics	en
dc.subject.other	human	en
dc.subject.other	male	en
dc.subject.other	pathology	en
dc.subject.other	testis	en
dc.subject.other	automation	en
dc.subject.other	biosensor	en
dc.subject.other	device	en
dc.subject.other	elasticity	en
dc.subject.other	pressure	en
dc.subject.other	technique	en
dc.subject.other	testis torsion	en
dc.subject.other	theoretical model	en
dc.subject.other	Cryptorchidism	en
dc.subject.other	Electronics	en
dc.subject.other	Equipment Design	en
dc.subject.other	Humans	en
dc.subject.other	Male	en
dc.subject.other	Testis	en
dc.title	Initial development of an electronic testis rigidity tester	en
heal.type	journalArticle	en
heal.identifier.primary	10.1100/tsw.2011.56	en
heal.identifier.secondary	http://dx.doi.org/10.1100/tsw.2011.56	en
heal.publicationDate	2011	en
heal.abstract	We aimed to develop our previously presented mechanical device, the Testis Rigidity Tester (TRT), into an electronic system (Electronic Testis Rigidity Tester, ETRT) by applying tactile imaging, which has been used successfully with other solid organs. A measuring device, located at the front end of the ETRT incorporates a tactile sensor comprising an array of microsensors. By application of a predetermined deformation of 2 mm, increased pressure alters linearly the resistance of each microsensor, producing changes of voltage. These signals were amplified, filtered, and digitized, and then processed by an electronic collector system, which presented them as a color-filled contour plot of the area of the testis coming into contact with the sensor. Testis models of different rigidity served for initial evaluation of ETRT; their evacuated central spaces contained different, increasing glue masses. An independent method of rigidity measurement, using an electric weight scale and a micrometer, showed that the more the glue injected, the greater the force needed for a 2-mm deformation. In a preliminary test, a single sensor connected to a multimeter showed similar force measurement for the same deformation in these phantoms. For each of the testis models compressed in the same manner, the ETRT system offered a map of pressures, represented by a color scale within the contour plot of the contact area with the sensor. ETRT found certain differences in rigidity between models that had escaped detection by a blind observer. ETRT is easy to use and provides a color-coded ""insight"" of the testis internal structure. After experimental testing, it could be valuable in intraoperative evaluation of testes, so that the surgeon can decide about orchectomy or orcheopexy. ©2011 with author. Published by TheScientificWorld.	en
heal.journalName	TheScientificWorldJournal	en
dc.identifier.doi	10.1100/tsw.2011.56	en
dc.identifier.volume	11	en
dc.identifier.spage	X673	en
dc.identifier.epage	686	en